论文标题
tau衰减成$ν_τ$和$ a_1（1260）$，$ b_1（1235）$，以及两个$ k_1（1270）$
Tau decay into $ν_τ$ and $a_1(1260)$, $b_1(1235)$, and two $K_1(1270)$
论文作者
论文摘要
我们研究$τ\至ν_τa$衰减，并使用$ a $ a axial-vector meson。我们在cabibbo模式下产生$ a_1（1260）$和$ b_1（1235）$共振，而在Cabibbo抑制模式下的两个$ k_1（1270）$ state。我们利用了先前的手性统一方法结果，这些方法是从s波中的载体和伪梅森相互作用动态出现的。实际上，获得了与$ k_1（1270）$量子数相关的两个不同的电线杆。 We find that the unmeasured rates for $b_1(1235)$ production are similar to those of the $a_1(1260)$ and for the two $K_1$ states we suggest to separate the present information on the $\bar K ππ$ invariant masses into $\bar K^* π$ and $ρK$ modes, the channels to which these two resonances couple most strongly, predicting that these modes peak at different energies and have不同的宽度。这些测量应阐明这两个$ k_1 $状态的存在。
We study the $τ\to ν_τA$ decay, with $A$ an axial-vector meson. We produce the $a_1(1260)$ and $b_1(1235)$ resonances in the Cabibbo favored mode and two $K_1(1270)$ states in the Cabibbo suppressed mode. We take advantage of previous chiral unitary approach results where these resonances appear dynamically from the vector and pseudoscalar meson interaction in s-wave. Actually two different poles were obtained associated to the $K_1(1270)$ quantum numbers. We find that the unmeasured rates for $b_1(1235)$ production are similar to those of the $a_1(1260)$ and for the two $K_1$ states we suggest to separate the present information on the $\bar K ππ$ invariant masses into $\bar K^* π$ and $ρK$ modes, the channels to which these two resonances couple most strongly, predicting that these modes peak at different energies and have different widths. These measurements should shed light on the existence of these two $K_1$ states.
